公开(公告)号：US20070230608A1

公开(公告)日：2007-10-04

申请号：US11394922

申请日：2006-03-31

申请人： Guangjie Li

发明人： Guangjie Li

IPC分类号： H04L1/02

CPC分类号： H04L1/0631 ,  H04B7/0854

摘要： Techniques for MIMO detection that has performance approaching that of a maximum likelihood (ML) algorithm while having a reduced computational complexity are described. One method of an embodiment decomposes a MIMO channel into a 2×2 system. QR decomposition and maximum likelihood detection may be performed on the 2×2 system. Thereafter, certain metrics are combined and either a soft demodulation or decision and cancellation follows. Other embodiments are described and claimed.

摘要翻译： 描述了具有接近最大似然（ML）算法的性能的MIMO检测技术，同时具有降低的计算复杂度。 实施例的一种方法将MIMO信道分解成2×2系统。 QR分解和最大似然检测可以在2x2系统上执行。 此后，组合某些度量，并且遵循软解调或决策和取消。 描述和要求保护其他实施例。

公开(公告)号：US08290539B2

公开(公告)日：2012-10-16

申请号：US12057727

申请日：2008-03-28

申请人： Guangjie Li ,  Yang Gao ,  May Wu

发明人： Guangjie Li ,  Yang Gao ,  May Wu

IPC分类号： H04W72/00

CPC分类号： H04W72/1257 ,  H04L1/0017 ,  H04L1/0026 ,  H04L1/0035 ,  H04W72/1226

摘要： A beam selection method in open loop MU-MIMO is disclosed, for an asymmetric antenna configuration. The proposed beam selection method employs limited feedback, as compared with single-user closed-loop MIMO and multiple-user closed-loop MIMO, in which the base station requires channel state information (CSI). The multi-user MIMO beam selection method selects the portion of beams from candidate beams for data transmission, meaning that the base station is training M beams. From this, the subscriber station selects N beams from the total M beams, with N≦M.

摘要翻译： 公开了开环MU-MIMO中的波束选择方法，用于非对称天线配置。 与单用户闭环MIMO和多用户闭环MIMO相比，所提出的波束选择方法采用有限的反馈，其中基站需要信道状态信息（CSI）。 多用户MIMO波束选择方法选择来自候选波束的波束的部分进行数据传输，这意味着基站正在训练M个波束。 由此，用户站从N个总线M中选择N个波束。

公开(公告)号：US08099119B2

公开(公告)日：2012-01-17

申请号：US12186722

申请日：2008-08-06

申请人： Xiaoxin Wu ,  Guangjie Li

发明人： Xiaoxin Wu ,  Guangjie Li

IPC分类号： H04B7/00

CPC分类号： H04L1/0026 ,  H04L1/0027 ,  H04L1/003

摘要： A method providing channel quality indicator (CQI) feedback from subscriber stations (SSs) to a base station (BS) may include a combination of a thresholding scheme and a best-M scheme. Another method providing CQI feedback may include providing multiple feedback channels, with SSs randomly allocating CQI values among the multiple feedback channels. The BS may choose a prevailing CQI message when channel contention occurs. Another method of providing CQI feedback may include SSs transmitting to the BS numbers of their CQI values that exceed a CQI threshold. Based on these numbers, the BS may determine how many CQI values each SS may send, and on which channels. The SSs may send these CQI values according to instructions from the BS.

摘要翻译： 从用户站（SS）到基站（BS）提供信道质量指示符（CQI）反馈的方法可以包括阈值处理方案和best-M方案的组合。 提供CQI反馈的另一方法可以包括提供多个反馈信道，SS在多个反馈信道中随机分配CQI值。 当信道争用发生时，BS可以选择当前的CQI消息。 提供CQI反馈的另一种方法可以包括向BS发送超过CQI阈值的其CQI值的SS。 基于这些数字，BS可以确定每个SS可以发送多少个CQI值，以及哪些信道。 SS可以根据来自BS的指令发送这些CQI值。

公开(公告)号：US07907677B2

公开(公告)日：2011-03-15

申请号：US11864932

申请日：2007-09-29

申请人： Guangjie Li ,  Xiaoxin Wu ,  Zhangyong Ma ,  Yang Gao ,  Feng Zhou ,  May Wu

发明人： Guangjie Li ,  Xiaoxin Wu ,  Zhangyong Ma ,  Yang Gao ,  Feng Zhou ,  May Wu

IPC分类号： H04B7/02

CPC分类号： H04W72/1257 ,  H04L1/0017 ,  H04L1/0026 ,  H04L1/0035 ,  H04W72/1226

摘要： A unified open loop single-user/multiple-user multiple-input-multiple-output (MIMO) system and method are disclosed. The system and method operate without use of channel state information feedback. Instead, the method utilizes channel quality indicator feedback to schedule users to spatial resource blocks. Both symmetric multi-user MIMO schemes (like 2×2 and 4×4) and asymmetric multi-user MIMO schemes are considered. CQI feedback and reduction proposals are also introduced. The method may be used in a proposed network topology.

摘要翻译： 公开了一种统一的开环单用户/多用户多输入多输出（MIMO）系统和方法。 系统和方法操作而不使用信道状态信息反馈。 相反，该方法利用信道质量指示符反馈来将用户调度到空间资源块。 考虑了对称多用户MIMO方案（如2×2和4×4）和非对称多用户MIMO方案。 还引入了CQI反馈和减少建议。 该方法可以用于所提出的网络拓扑中。

公开(公告)号：US07830827B2

公开(公告)日：2010-11-09

申请号：US11217431

申请日：2005-09-02

申请人： Guangjie Li

发明人： Guangjie Li

IPC分类号： H04H20/71

CPC分类号： H04L5/0037 ,  H04L5/0007 ,  H04L5/023 ,  H04L2001/0098

摘要： The present invention discloses a method of handling multi-user/multi-service in a wireless communication system comprising an access point, characterized in that the method includes the steps of: converging, by the access point, data packets of multi-user/multi-service and encapsulating the data packets of multi-user/multi-service into a container in the access point; coding and modulating, by the access point, the data encapsulated in the container; and mapping, by the access point, the coded and modulated data in the container to physical resources and emitting via a traffic channel the coded and modulated data in the container. According to the present invention, efficiency of a wireless communication system can be enhanced while delay can be reduced.

摘要翻译： 本发明公开了一种在包括接入点的无线通信系统中处理多用户/多业务的方法，其特征在于该方法包括以下步骤：通过接入点收敛多用户/多用户的数据分组 - 将多用户/多业务的数据包封装在接入点的容器中; 由接入点对封装在容器中的数据进行编码和调制; 以及由所述接入点将所述容器中的编码和调制数据映射到物理资源，并且经由业务信道发射所述容器中的编码和调制数据。 根据本发明，可以提高无线通信系统的效率，同时可以降低延迟。

公开(公告)号：US07443782B2

公开(公告)日：2008-10-28

申请号：US10747187

申请日：2003-12-30

申请人： Hongwei Yang ,  Guangjie Li

发明人： Hongwei Yang ,  Guangjie Li

IPC分类号： H04J11/00

CPC分类号： H04L1/04 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0094 ,  H04L25/03821 ,  H04L27/2647

摘要： The present invention discloses an adaptive ICI self-cancellation method, which can adapt to the dynamical change of frequency offset and signal-noise power ratio (SNR), and a device thereof. The adaptive ICI self-cancellation method of the present invention comprises the steps of: estimating the maximum frequency offset and signal-noise power ratio (SNR) of signals, selecting a modulating state in accordance with an adaptive strategy, and determining a demodulating state based on the selected modulating state. An adaptive inter-carrier interference self-cancellation device using the method comprises: a transmitter including a digital demodulator, an inter-carrier interference self-cancellation modulator and an adaptive controller; and a receiver including a digital demodulator, an inter-carrier interference self-cancellation demodulator, a fast Fourier transformer, an estimator, a signaling demodulator and a demodulation controller. Through the present invention, the cancellation of inter-carrier interference is achieved, and at the same time the working state of the digital modulator and the ICI self-cancellation modulator satisfies the highest spectrum efficiency.

摘要翻译： 本发明公开了一种可以适应频偏和信噪比功率比（SNR）的动态变化的自适应ICI自消除方法及其装置。 本发明的自适应ICI自消除方法包括以下步骤：估计信号的最大频率偏移和信噪比（SNR），根据自适应策略选择调制状态，以及基于解调状态确定 在所选择的调制状态。 使用该方法的自适应载波间干扰自消除装置包括：发射机，包括数字解调器，载波间干扰自消除调制器和自适应控制器; 以及包括数字解调器，载波间干扰自消除解调器，快速傅里叶变换器，估计器，信令解调器和解调控制器的接收机。 通过本发明，实现了载波间干扰的消除，同时数字调制器和ICI自消除调制器的工作状态同时满足最高的频谱效率。

公开(公告)号：US20060062247A1

公开(公告)日：2006-03-23

申请号：US11217431

申请日：2005-09-02

申请人： Guangjie Li

发明人： Guangjie Li

IPC分类号： H04J3/22

CPC分类号： H04L5/0037 ,  H04L5/0007 ,  H04L5/023 ,  H04L2001/0098

摘要： The present invention discloses a method of handling multi-user/multi-service in a wireless communication system comprising an access point, characterized in that the method includes the steps of: converging, by the access point, data packets of multi-user/multi-service and encapsulating the data packets of multi-user/multi-service into a container in the access point; coding and modulating, by the access point, the data encapsulated in the container; and mapping, by the access point, the coded and modulated data in the container to physical resources and emitting via a traffic channel the coded and modulated data in the container. According to the present invention, efficiency of a wireless communication system can be enhanced while delay can be reduced.

摘要翻译： 本发明公开了一种在包括接入点的无线通信系统中处理多用户/多业务的方法，其特征在于该方法包括以下步骤：通过接入点收敛多用户/多用户的数据分组 - 将多用户/多业务的数据包封装在接入点的容器中; 由接入点对封装在容器中的数据进行编码和调制; 以及由所述接入点将所述容器中的编码和调制数据映射到物理资源，并且经由业务信道发射所述容器中的编码和调制数据。 根据本发明，可以提高无线通信系统的效率，同时可以降低延迟。